hw2 done

Makefile

@@ -2,6 +2,7 @@ MAKE := make
 
 ARCH := aarch64
 GNU := $(ARCH)-linux-gnu
+GDB := $(GNU)-gdb
 
 QEMU := qemu-system-$(ARCH)
 QEMUFLAGS += -M raspi3b -display none -serial null -serial pty
@@ -9,9 +10,9 @@ QEMUFLAGS += -M raspi3b -display none -serial null -serial pty
 CC := $(GNU)-gcc
 CCFLAGS += -Wall -Wextra -O0 \
 					 -nostdinc -nostdlib -nostartfiles -nodefaultlibs \
-					 -Wno-unused-parameter -Wno-main -g
+					 -Wno-unused-parameter -Wno-unused-value -Wno-main -g
 LD := $(GNU)-ld
-LDFLAGS += -g -nostdlib
+LDFLAGS += -g -nostdlib -no-pie
 OBJCOPY := $(GNU)-objcopy
 
 #TARGET := kernel8
@@ -23,7 +24,7 @@ LD_SCRIPT := $(TARGET_DIR)/linker.ld
 INCLUDE += -Iinclude
 LIB_DIR := ./lib
 MISC_DIR := ./misc
-#QEMUFLAGS += -dtb $(MISC_DIR)/bcm2710-rpi-3-b-plus.dtb
+QEMUFLAGS += -dtb $(MISC_DIR)/bcm2710-rpi-3-b-plus.dtb
 
 BOOTLOADER_DIR := ./bootloader
 ROOTFS_DIR := ./rootfs
@@ -35,7 +36,7 @@ SRCS := $(shell find $(TARGET_DIR) -name '*.[cS]') \
 				$(shell find $(LIB_DIR) -name '*.c')
 OBJS := $(SRCS:%=%.o)
 
-.PHONY: all build clean clean_target run
+.PHONY: all build clean clean_target run kernel debug gdb
 
 all:
 	$(MAKE) build TARGET_DIR=./kernel TARGET=kernel8
@@ -69,4 +70,14 @@ clean_target:
 
 run: all $(CPIO)
 	$(QEMU) -kernel bootloader.img $(QEMUFLAGS)
-	#$(QEMU) -kernel kernel8.img $(QEMUFLAGS)
+
+kernel: all $(CPIO)
+	-killall screen
+	$(QEMU) -kernel kernel8.img $(QEMUFLAGS)
+
+debug: all $(CPIO)
+	-killall screen
+	$(QEMU) -kernel kernel8.img $(QEMUFLAGS) -S -s
+
+gdb:
+	$(GDB)